Lookup value in script

Lookup value in script


I have a lookup form STATUSES:

ID STATUS NOTES NAME
21677000001558756 301 SENT NOTE TO USER; WAITING FOR FEEDBACK
TO TAKE NEXT ACTION ITEM. 
PENDING USER FEEDBACK


This form is used as a lookup column in MAIN_FORM1.   Whild creating a Deluge script in referring to the STATUSES form, using the STATUS lookup field: 

for each r in MAIN_FORM1 [STATUS == 301]
{  r.STATUS = 305;
}


In this case,  shall I use 

for each r in MAIN_FORM1 [STATUS == 301]


or 

for each r in MAIN_FORM1 [STATUS == 21677000001558756]


Does this really matter?  Can I use either value to refer to the corresponding row in the lookup form? 

Thanks.